Liver to me has always smelled and tasted like spoiled meat which is an issue I can't get past. The problem with most of these suggestions is that they rely on the flavor of onions to help with the taste of the liver. I DON'T LIKE ONIONS. Never have and, since I am now almost 60, probably never will. Of course, now that I live alone, I never have to cook with them again!
I vote for the Chris Kresser approach noted above - freezing small diced pieces and downing a few a day with my other pills.